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LOG OF WELL PW6r149 A Page 1 of 4 <br /> Date(s) Drilled: 2-28-94 to 3-2-94 Geologist: Donald W. Clarke III (RFW) <br /> Drilling Contractor: Clark Well Client: TreaTek-CRA <br /> Driller/Helper: Ken Plaster/Tony Serpa Site: Occidental Chem./Simplot <br /> Rig Type: Failing Holemaster 1250 Location: Lathrop, California <br /> Method: Mud Rotary (5 1/2 bags Development: Surging w/compressed air <br /> bentonite quik-gel added) (-1600 gallons purged) <br /> Pilot Diam: 6 inches Plus test pumping <br /> Ream Diam: 12 inches (~ 400 gallons purged) <br /> Drilled Depth: 155 feet <br /> Depth Description <br /> A) <br /> 0 <br /> SM/SP—Brown SILTY FINE TO MEDIUMSAND to FINE TO MEDIUM SAND with trace silt, <br /> 2 micaceous, some fragments of very hard, cemented material. <br /> 4 <br /> SC/CL—Cream to grayish brown CLAYEY FINE SAND to FINE SANDY CLAY, cemented, very <br /> 6 hard. <br /> SP--Brown to tan FINE TO MEDIUM SAND, trace silt. <br /> 8 <br /> 10 <br /> SC/CL—Cream to grayish brown CLAYEY FINE SAND to FINE SANDY CLAY, cemented, very <br /> 12 hard. <br /> 14 <br /> 16 <br /> 1$ SP--Light gray FINE TO MEDIUM to MEDIUM TO COARSE SAND, trace to little fine gravel to <br /> 1/4". <br /> 20 <br /> 22 <br /> 24 <br /> 26 <br /> 28 <br /> 30 <br /> 32 <br /> 34 : <br /> 36 <br /> k; <br /> 38 <br /> (continued) <br />